Impact of salt stress on photosystem II efficiency and antioxidant enzyme activities of safflower (Carthamus tinctorius L.) cultivars

Şeküre Çulha ERDAL; Hüsnü ÇAKIRLAR

Makale detayları

Impact of salt stress on photosystem II efficiency and antioxidant enzyme activities of safflower (Carthamus tinctorius L.) cultivars

Yazarlar:

Şeküre Çulha ERDAL | Hüsnü ÇAKIRLAR

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Biology 2014 Vol.38 Issue 4, pp.549-560

Belge Tipi:

Makale

Yayın Tarihi:

3/2014

Belge Dili:

Türkçe

Document ID (Org No.):

2000812178

Sıklık:

İki Aylık

eISSN:

1303-6092

pISSN:

1300-0152

Anahtar kelimeler:

Özet:

 

This study was conducted to determine the tolerance of safflower (Carthamus tinctorius L.) cultivars (Dinçer, Remzibey-05, and Yenice) against salt stress based on some physiological and biochemical parameters at the vegetative stage. Eighteen-day-old plants were subjected to salt stress [0 (control), 75, 150, 225, and 300 mM NaCl concentrations] for 12 days, which led to a significant decrease in growth parameters (stem growth, fresh weight, and relative water content) and the photosynthetic pigment contents of the safflower cultivars. The photochemical activities of photosystem II of the cultivars were negatively affected by salinity, especially at the highest concentration (300 mM). Salt stress decreased K+ content and K+/Na+ ratio while it increased Na+ content. Malondialdehyde and free proline contents in the leaves of cultivars increased gradually in proportion to the increase of NaCl concentration. Analysis of antioxidant enzyme activities showed that these enzymes responded differently to the NaCl concentrations. Dinçer, with higher antioxidant enzyme activities, had a more effective response than the other cultivars. Considering growth and biochemical and chlorophyll fluorescence parameters with the endogenous defense system, Dinçer had a higher withstanding capacity against salinity than the other cultivars.

 

This study was conducted to determine the tolerance of safflower (Carthamus tinctorius L.) cultivars (Dinçer, Remzibey-05, and Yenice) against salt stress based on some physiological and biochemical parameters at the vegetative stage. Eighteen-day-old plants were subjected to salt stress [0 (control), 75, 150, 225, and 300 mM NaCl concentrations] for 12 days, which led to a significant decrease in growth parameters (stem growth, fresh weight, and relative water content) and the photosynthetic pigment contents of the safflower cultivars. The photochemical activities of photosystem II of the cultivars were negatively affected by salinity, especially at the highest concentration (300 mM). Salt stress decreased K+ content and K+/Na+ ratio while it increased Na+ content. Malondialdehyde and free proline contents in the leaves of cultivars increased gradually in proportion to the increase of NaCl concentration. Analysis of antioxidant enzyme activities showed that these enzymes responded differently to the NaCl concentrations. Dinçer, with higher antioxidant enzyme activities, had a more effective response than the other cultivars. Considering growth and biochemical and chlorophyll fluorescence parameters with the endogenous defense system, Dinçer had a higher withstanding capacity against salinity than the other cultivars.

Makale detayları

Impact of salt stress on photosystem II efficiency and antioxidant enzyme activities of safflower (Carthamus tinctorius L.) cultivars

Yazarlar:

Şeküre Çulha ERDAL | Hüsnü ÇAKIRLAR

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Biology 2014 Vol.38 Issue 4, pp.549-560

Belge Tipi:

Makale

Yayın Tarihi:

3/2014

Belge Dili:

Türkçe

Document ID (Org No.):

2000812178

Sıklık:

İki Aylık

eISSN:

1303-6092

pISSN:

1300-0152

Antioxidative response

Carthamus tinctorius L.

photochemical activity

salt stress

Sayı

Makale detayları

Impact of salt stress on photosystem II efficiency and antioxidant enzyme activities of safflower (Carthamus tinctorius L.) cultivars

Yazarlar: Şeküre Çulha ERDAL | Hüsnü ÇAKIRLAR

Yayıncı: TUBITAK

Dergi: Turkish Journal of Biology 2014 Vol.38 Issue 4, pp.549-560

Belge Tipi: Makale

Yayın Tarihi: 3/2014

Belge Dili: Türkçe

Document ID (Org No.): 2000812178

Sıklık: İki Aylık

eISSN: 1303-6092

pISSN: 1300-0152

Antioxidative response

Carthamus tinctorius L.

photochemical activity

salt stress

Sayı

Yazarlar:

Şeküre Çulha ERDAL | Hüsnü ÇAKIRLAR

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Biology 2014 Vol.38 Issue 4, pp.549-560

Belge Tipi:

Makale

Yayın Tarihi:

3/2014

Belge Dili:

Türkçe

Document ID (Org No.):

2000812178

Sıklık:

İki Aylık

eISSN:

1303-6092

pISSN:

1300-0152